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參數(shù)資料
| 型號(hào)： | SC600EVB |
| 廠商： | Semtech Corporation |
| 元件分類： | LED驅(qū)動(dòng)器 |
| 英文描述： | mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output |
| 中文描述： | mAhXLifeTM LED與5.0V，4.5V時(shí)，或者為4.0V驅(qū)動(dòng)器輸出 |
| 文件頁(yè)數(shù)： | 1/19頁(yè) |
| 文件大?。?/td> | 485K |
| 代理商： | SC600EVB |
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www.semtech.com
1
POWER MANAGEMENT
Description
The SC600 is a versatile charge pump designed for use
in battery operated power supply applications. The wide
input range is matched for Li-Ion battery applications.
mAhxLife
TM
LED Drivers feature a fractional charge pump
implementation with ef
fi
ciency comparable to a switching
regulator without costly inductors. Only two tiny ceramic
capacitors are required, and the inductorless implemen-
tation provides a reduced-EMI solution. Patented low
noise mode switching circuitry and constant output cur-
rent allow the use of extremely small input and output
capacitors.
SC600
mAhXLife
TM
LED Driver with
5.0V, 4.5V, or 4.0V Output
50
60
70
80
90
100
3.0
3.2
3.4
3.6
3.8
Input Voltage [V]
4.0
4.2
E
90% of Li-Ion
Battery Life
SC600A
5.0V@60mA
Device with Only 2x Mode
5.0V@60mA
January 9, 2006
Features
Small size - MLPD 10 lead 3x3mm or MSOP-10
package allows for a complete solution in .05 sq. in.
Peak ef
fi
ciency over 90% (extends battery life)
Four component versions available
60mA versions available in 5.0V and 4.5V output
120mA versions available in 4.5V and 4.0V output
Short-circuit and over-temperature protection
Soft-start function
Shutdown current <1
μ
A
Selectable
fi
xed frequencies of 8kHz, 32kHz,
262kHz and 650kHz
Low input and output ripple
Regulated to ± 5%
Ease of use
Typical Application Circuit
Applications
Cellular phones
LED backlighting
PDA power supplies
Portable electronics
Electronic books
Handheld computers
Wireless web appliances
The SC600 charge pump can be used for applications
that require up to 120mA of output current with a 4.0V
or 4.5V output. The 5.0V output version provides up to
60mA of output current.
mAhXLife
TM
LED drivers replace switched mode power
supplies and provide comparable ef
fi
ciency with less cost,
area, noise, and complexity.
Typical Ef
fi
ciency
Cin
1.0uF
2.7V to 6.5V
Cbucket1
1.0uF
Cbucket2
1.0uF
VIN
EN
CD4
CX8
GND
CF2-
CF2+
CF1-
CF1+
VOUT
3
6
4
5
8
7
10
9
2
1
U1
S
Cout
0.33uF
UP TO 6 LEDS
4.0V, 4.5V or 5.0V
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